Stove-pipe damper



(No Model) H. H. B. VINCENT.

Stove Pipe Damper. No. 239,895. Patented Aprii 5,1881.

| 1 ILIIIIHIHHHIIIIII ".PEIERS, PMOTO-UTHOGRAPHER. WASHINGTON, D C

. IINITED STATES PATENT OFFICE.

HENRY H. B. VINCENT, OF MINNEAPOLIS, MINNESOTA.

STOVE-PIPE DAM PER.

SPECIFICATION forming part of Letters Patent No. 239,895, dated April 5,1881.

Application filed January 28, 1881. (No model.)

To all whom it may concern:

Be it known that I, HENRY H. B. VINCENT, of Minneapolis, in the countyof Hennepin and State of Minnesota, have invented certain new and usefulImprovements in Stove-Pipe Damp ers; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings, and to theletters of referencemarked thereon, which form part of this specification.

This invention relates to certain improvements in stove-pipe dampers,and it has for its objects to provide a damper which, when fully closed,will offer asuitable obstruction tothe draft through the pipe toproperly retard it, while it will not stop it entirely, and to providecertain improvements in the construction of the damper, whereby it maybe readily secured to the handle, as more fully hereinafter specified.These objects I attain by the mechanism illustrated in the accompanyingdrawings, in whicht Figure 1 represents a perspective view of myimproved damper complete; Fig. 2, a side elevation of the same; Fig. 3,a detached view, showing one of the seats for the damper-handle; andFig. 4 is a bottom-plan view of the damper. V

The letter A indicates an annulus, constructed of cast metal, bypreference, and provided with lugs B and G on one side. The lugs B areformed with angular recesses at their ends, for the purpose hereinafterdescribed, and the lugs O with depressions c.

The letter D indicates a deflecting-plate. This is of less diameter thanthe annulus. The said plate is provided with lugs E and F on one side,which are respectively so placed as to be opposite to the lugs B and Oon the annulus. The lugs E have angular recesses at their ends, so thatwhen they are placed injuxtaposition with the lugs B they, with saidlugs, will form rectangular seats for the handle G. The lugs F arepointed or rounded at their ends, so as to set in the depressions of thelugs O. v

The letter H indicates a series of screw-bolts passing through the plateand annulus, and provided with nuts I, by means of which said plate andannulus may be secured together and caused to bind tightly upon thehandle, so as to be held thereon. The annulus is of a diameter to fitthe interior of a stove-pipelike an ordinary damper, and both the plateand annulus are provided with beads K at their edges, for the purpose ofincreasing the strength of the damper without adding materially to itsweight.

The damper is located in the stove-pipe wherever required, and isoperated in the same manner as the ordinary damper, and when fullyclosed permits a retarded draft to pass through it, as will be readilyperceived.

- Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, is-

In a stovepipe damper, the combination of the annulus and thedeflecting-plate, provided with lugs adapted to engage each other, oneset of lugs being provided with angular recesses, formingseat for thedamper-rod, and the screw-bolts whereby the plate and annulus aresecured together, substantially as and for the purpose specified.

In testimony that I claim the foregoingas my own I affix my signature inpresence of two witnesses.

HENRY H. B. VINCENT. [L. S.]

Witnesses:

. M. DOUGLASS,

JEROME FISHER.

